i5-9400F vs i5-8650K

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Primary details

Comparing Core i5-8650K and Core i5-9400F processor market type (desktop or notebook), architecture, sales start time and price.

Place in the rankingnot rated1088
Place by popularitynot in top-10024
Cost-effectiveness evaluationno data9.68
Market segmentDesktop processorDesktop processor
SeriesIntel Core i5Intel Core i5
Power efficiencyno data8.68
Architecture codenameCoffee Lake (2017−2019)Coffee Lake-R (2018−2019)
Release date1 September 2018 (6 years ago)7 January 2019 (5 years ago)
Launch price (MSRP)no data$182

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i5-8650K and Core i5-9400F basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores6 (Hexa-Core)6 (Hexa-Core)
Threads66
Base clock speed3.7 GHz2.9 GHz
Boost clock speed4.5 GHz4.1 GHz
Bus typeDMI 3.0DMI 3.0
Bus rate4 × 8 GT/s4 × 8 GT/s
Multiplierno data29
L1 cache384 KB385 KB
L2 cache1.5 MB1.5 MB
L3 cache9 MB (shared)9 MB (shared)
Chip lithography14 nm14 nm
Die size126 mm2149 mm2
Maximum core temperatureno data100 °C
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier+-

Compatibility

Information on Core i5-8650K and Core i5-9400F compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1 (Uniprocessor)1 (Uniprocessor)
Socket1151FCLGA1151
Power consumption (TDP)95 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-8650K and Core i5-9400F. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data-
Idle Statesno data+
Thermal Monitoring-+

Security technologies

Core i5-8650K and Core i5-9400F technologies aimed at improving security, for example, by protecting against hacks.

TXTno data-
EDBno data+
Secure Keyno data+
MPX-+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-8650K and Core i5-9400F are enumerated here.

VT-d++
VT-x++
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-8650K and Core i5-9400F. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4 Dual-channelDDR4-2666
Maximum memory size64 GB128 GB
Max memory channels22
Maximum memory bandwidth42.671 GB/s42.671 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel UHD Graphics 630no data

Peripherals

Specifications and connection of peripherals supported by Core i5-8650K and Core i5-9400F.

PCIe version3.03.0
PCI Express lanesno data16

Pros & cons summary


Recency 1 September 2018 7 January 2019
Power consumption (TDP) 95 Watt 65 Watt

i5-9400F has an age advantage of 4 months, and 46.2% lower power consumption.

We couldn't decide between Core i5-8650K and Core i5-9400F. We've got no test results to judge.


Should you still have questions on choice between Core i5-8650K and Core i5-9400F, ask them in Comments section, and we shall answer.

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Intel Core i5-8650K
Core i5-8650K
Intel Core i5-9400F
Core i5-9400F

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Community ratings

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3.4 9 votes

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4.9 56547 votes

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Questions & comments

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